Type-writing machine.



No. 876,136. PATENTED JAN. 7, 1908. J. H. BIRCH & J, S. FOLEY. TYPE WRITING MACHINE.

APPLICATION FILED 00T.19, 1906.

4 SHEETS-BHEET 1.

6 3 GM k 1 T I y I i d JL WITNESSES ke /6722a,?

.'NO- 876,136. PATENTED JAN. 7, 1908. J. H. BIRCH & J. s. FOLEY.

TYPE WRITING MACHINE.

APPLICATION FILED 001219. 1906.

4 BHEETBBEBET 2.

Jamcfd JEZ ey No. 876,136. PATENTED JAN. 7, 1908. J. H. BIRCH & J. S. FOLEY.

TYPE WRITING MACHINE.

APYLIOA'IION FILED OUT. 19. 1906.

4 SHEETS-SHEET 4.

fizvezzfaz d' vim WITNESSES ,T 0 all whom fit concern;

.UNITED STATES PATENT OFFICE.

JOHN HENRY BIRCH AND JAMES SAMUEL FOLEY, OF WEST BROMWIOH, NEAR BIRMINGHAM, ENGLAND. I

TYPE-WRITING MACHINE.

Be it known that JOHN HENRY Brncn and JA EsSAMUnL FOLEY, subjects of the King of Great Britain, residing at High Street, West 'Brornwich, near Birmingham, Eng- 'land, have invented certain new and useful Improvements in Type-Writin Machines,

of which the following is; a speci cation.

This invention has relation to typewriting machines, and has for its ob'ect to provide such machin'eswith improv adjustable ar- 'rangements for limiting the traverse of the carriage-and for regulating or determining the width of'the marginal spaces on either or both ofjthe'right and left hand sides of the paper- Which'are to-beleit clear or unprinted uponwhen the machine is being operated.

tAccordin to the present invention the i right and lei: hand marginal stop devices and the 006 crating mechanism which is mounted upon t e-traversing carriage of the machine are so constructed and arran d as not only to admit of the adjustment 0 the said -sto s so as to provide for margins of any suitab e width being left on either or both sides of the paper, but they also enable the operator, by the manipulation of'a sim le release key, to t-of gcar that part of the mechanism which is mountedupon the carriage so as to-adinit of the latter being trav-" ersed or moved on beyond either of the.

stops when it is'r'equirecl for theprintim to a be oontinuedinto either the right or'deft hand margin or into both margins. Further, 3 5- the said improved mechamsm comprises Y simple and efiicient means whereby oneof the margin stops is utilized for the purpose of ringing the alarm-bell when the carriageis approaching the end of its traverse between t e said stops, together with a spring-buflering arrangement for cushioning the carriage and preventing shock and damage to the maohine by the concussion which is set up when the operator runs the said. carriages back against-the right-hand margin stop before commencing to print a'q fresh ine.

In the accompanymg drawings the invention is shown applied to a typewriter of that class in which the platen is mounted upon a traversing carriage arranged at the back of the machine between the 'type bar housing and the margin; rail and in which thetypes' are adapted to strike upon the top of the said platen, the latter being traversed by a traction spring and controlled in its traversing I Specification of Letters Patentl Application filed 0mm 19. 1906. Serial No. 539.684.

wards the left hand mar in stop tion-spring under-contro 'of thele handof 100' Patented J an. '7, 1908.

,movement from right to left by an escapement mechanism cooperating with a rack-rod and space bar in the ordinary and well known manner. v

Figure 1 of the said'drawings represents a plan of the back part of a typewriter emodying our improvements, the platen being removed from its carriage in order to show more clearly the arrangement of the adjustable stops on the stationary margin raiL-the cooperatin stop on the traversing carriage, the stop re ease mechanism; the bell-rin ing -mechanism and the means provided for uffering thecarriage or taking up shock when the operator pushes the carriage back against the right-hand margin stop prior to commencin writing upon a new line. This view shows t e positions assumed by the several parts when the carriage is arrested in its traverse fromright to left b the abutment-of the stop device on the said carriage a ainst the left hand stop on the margin rail it eingunderstood that the carriage is traversed in this direction with an intermittent or ste by-step movement under the influence of t e 1' traction spring controlled by the escapement :and-"spaoing bar mechanism: Fig. 2 is another plan, showing the positions assumed b the parts" whensthe'carriage is pushedbae by hand in the direction indicated by the arrow and the carriage-stop is brought up forcibly against .theright-h'and stop on the marin rail. This view also shows how the buferin spring of the-carriage is compressed for aisorbing any'shock that may be occasioned during this movement. Fig. 3 shows another-view inplan, similar to Figs. 1 and 2, but showing the carriage-in a-midwayposition betweenthe right and left hand margin-rail stops and the esoapement-disen- (giaged by the escapement-release'key so astoisassociate' the carriage from the space-bar" mechanism and admit of it bein drawrrtoits=trao the operator who; by maintaining pressure u on the release key kee s the-escapement ci ar ofthe rack-rail min the said carriage has been drawn' into-the desired position. Fig; 4 is a further'plan showingthepositions of the arts when the carriage has been pushed. eyond the fight hand mar stop after thesto -mechanism rclease ey hasbeen actuate VVhen'the carriage is in this-- position the machine will write-upon the left hand margin of the paper. Fig. 5 is a view showing the escapement in horizontal section and a plan of the platform on which said escapement is mounted Fig. 6 is a trans verse vertical section of the carriage-stop and escapement platform upon the dotted line m Fig. 2, but the escapement itself is omitted to avoid complication. Fig.7 is a similar sectional view but shows the-position into which the said carriage stop may be raised by the stop-mechanism release key in order to admit of the traversing movement of the carriage being continued beyond the margin rail stop. Fig. 8 is an elevation,

partly in section of the back of the carriage (without the platen) with the margin rail broken away .in order to show more clearly the arrangement of the stop release mechan ism which. is operated when it is desired for the carriage to pass beyond either ofthe margin stops. The figure also illustrates the arrangement H of the bell-ringing mechanism. Fig.9 is another elevation which includes the margin rail and shows the belhringing mechanism. in operation.

with he margin stop for arresting the movement of the carriage, while Fig. 11 is a simia lar View showing the position intowhich the carriage stop is placed by the actuation of the stop-release mechanism in order to admit of the carriage being traversed beyond the margin stop. i e

The same letters of reference indicate corresponding parts in the several figures of the rawings.

Int-he machine represented in the said figures, the laten is mounted u on a carriage fro along the back 0: the machine and to be supported and kept in position by a special arrangement of vention but are fully described in the anti-friction rollers, guide rails and other devices which form no part of the present in s ecification of my British Letters Patent of 1905 No. 26232. This carriage is connected with a traction spring (not shown) the tendency of which is to draw the same from, left toright with an intermittent or step-by-ste movement which is controlled in the usua way by an escapement device b, 006 crating and intermittently engaging wit an oscillating rack rail b connected with the spacing bar and writing keys of the machine and ada ted to admit of the carriage being drawn along by the spring to the extent of one tooth of the rail 5 when the latter is shifted momentarily from engagement with the escapement at each time the said spacing bar or one of .the keys isfdepressed. The escapement is moved out of engagement with the rail 1) by a spring-controlled shifting bar If so that the carriage can be shifted manually to its initial position.

Fig. 10 is a detail view. showing how the carriage stop cooperates c is a graduated margin-rail which is ary ranged upon the fixed frame or body part of the machine and at the back of the traversing platen carriage and Whose front or inner edge is formed at regular intervals with otc es 0 corresponding to the number of lett rs which the machine is designed to print in one line.

Two margin stops d and e are fitted upon this i rail for cooperating with a stop-arm on .the

carriage to reg'u late respectively the width ofthe right and left hand margins, and the each. consist of small slides or'bo'xes d whic take over the rail and are capable of a slight play in a direction at right angles to'the ength of the said rail to admit of the engagement and disengagement of. a retaining or looking tooth or stud d ,-WhlCl1 is carried inside the said slide, with one or other of the sure applie to the. back of the said sli e to i admit of the disengagement of the locking tooth'when the slide requires to be shifted for readjustingthe width of the margin. The stops-proper are carried at the fronts of the slides so as to project inside the margin rail and they consist of short inclined ribs or feathers d, esloping respectively in opposite directions (see Figs. 8 and 9)from the inner to the outer ends of the slides and it is against the inner and elevated ends of these stops that the cooperating stop'fitting f on the carriage is adapted to impinge on the traversingparts reaching the limits of their rescribed movement either from right to 'eft under the influence of the carriage-traction spring or in the contrary direction by the return movement which is. 'obtained when the operator presses against the left hand endof the carriage in opposition to the said spring. j

i The carriage'is fitted with a rock-shaft -g slidably and rotatably mounted in suitable bearings g; 9 g? in a position parallel with i the margin rail and having'fixed rigidly to it, the carriage stop-arm f which normally lies in a horizontal lane and is extended at right angles from t e shaft, rearwardly to- I wards the inner edge of the margin ;rail so that its rearward end comes between and is H adapted to impinge alternately against the. steps which are" carried by the adjustable" slides. The said rock shaft also'has secured to it a plate or bracket 1) which carries the escapement device I), said plate beingsuspended from the shaft by ears 6, b ,which rest res ectively against the op osite ends of the shank 1 of the arm in such a ma'nner that althoug the shaft 9, arm. f and plate I) with escapement b are'capable of making a collective sliding movement relative to the carriages, the arm f and s'haftg may also lv end' tional movement 4. In add tionsaid. spring serve the stop arm -pos1t1on-in linewith the abutment; ends of pendently of the escapement and its bracketlate when the leveror sto mechanism re ease key 9 which is made ast to the righthand end-of the rock-shaft, is operated. This arm f has arranged in connection with it, an o en-coiled torsion spring f which surrpunds t e rock shaft so that one end f 2 bears against and is made fast to the bracket ear 9 on the body of thecarriage whilethe other bears against the bracket 1) of' the bracket plate I) so and expanded condition the'pressure exerted endwise by the spring against the said plate forces the latter against the rock'shaft bearing 9 and maintains the slidable parts g, f, b

inthe-positions shown in Figs. 1, 3 and 4, but should the stop-arm f be violently driven a ainst the-right hand margin stop at the end 0 its return movement by hand, then the said spring serves as abufier for absorbing or taking upthe shock, as'when the arm is brought up against the stops, the compression and shortening of the spring admits of the carriage and. platen being carried on a short distance independent of the stop arm and escapement, but this addiis opposed and bufiered by the spring and the carriage is finally-arrested when its coils are closed as represented in 'Fig. 2 while when the endpressure applied by the operatorls hand is relieved from the carriage the coils-of thespring open out and. restore the said carriage and platento the normal positions shown in "Figs. 1, 3 and to buffering the relative movement ofthe parts above referred to and maintaining them the ordinary relationship to one another when the carriage isstationary or is traversing from right to left, the

' o utilized torsion'ally to prein its normal horizontal for which purpose that th margin rail stops,

-' end which abuts against the escapement bracketplate provided with a'projecting *endfi which-be gainst the top of a lateral extension 3' fromxthe sto arm f, 'and connormal horizontal p axis in which it is, how;

ever, maintained, by its bent-down {extrem ity f taking? an abutment against a part-of the 'carriage framing (see- Fig'. '6) but when: g? is d epressed and the stop arm is tiltedupwg d fi Fig.7 by

the stop mechanism release key into the angularfposition shown in the partial rotation. of the rock shaft, then. the extension) carries with it the projecting end of'the spring and renders the same tor-. sionally active for depressing the stop arm. again when thepressure on'the release-keg;

is relieved. 'ihc lefhhaiid end of the roc shaft is extended beyond the carriage to carry the said stop mechanism release key or lever g which is arranged conveniently that when in its mormal: I

beyond the stop shown in Fig. land when the finger is ret e same below its' 'clearly shown b make an upward angular movement indefor manipulation by the thumb. or fin er of the o erators left handandwhereby when it is esired for the carriage to be traversed beyond either the right or left hand margin stops soas to enable the machine to print in the. corresponding margin), the, op rator may impart the necessary partial rotatory movement to the shaft in opposition to the spring and raise the rear a o've the stop-piece on the margin slide as shown inFhg. 7 and the leftha'nd-part of Fig. '10. The carriage may then be moved on to any desired extent as moved from the release key, the rock shaft spring restores both the shaft and its arm to their normal positions, while when the carriage is returning or being moved in the o tfid stop aim being brought vagainst the.incline'd top surface (6 d feather 4e", (1 on inclined surface will act as. a stationary cam and will raise the said arm \until it has cleared the stop; when the rock shaft torsion sprin again restores position,

The inclined stop-pieces of bothmargin vslides have the same action, and their disposition at. opposite angles admits of the stoparm being raised byothe left hand stop when the carriage is-bein traversed from left to right after the mac he has been used for right hand stopacts in a similar manner durin the movement of the carriage in-the opposite direction after printing in the right hand margin. T he inclined stop of the. left hand margin-slide is also ;tilized to operate the mechanism for ringing the alarm bell h,-

and for this pur ose, the bell clacpper or 2 supstriker h is carrier by a'rotatable r0 ported by the carriage and rovided with a torsion spring 71?. and retain-the said'striker against the dome of the bell. point'a stud or laterally-promotingpiece h while the carriage has pivoted to it, a gravitating armor bell-control lever 't-Wll1Cl1 is adapted to make a limited angular movement in a vertical plane and earrying a depending piece t" which impinges against the stud-"or "projectionl h, of the rotatable or. rolling striker rod and is retained; there by grav- -,ity,--- In their normal positions, winch are end of the stop-arm of the stop-rib or the margin slide, the said the stop arm to its norma This rod carries at a suitable osite direction, then, on the rear end of printing in the left-hand margin, while the hose ten ency, is to take 'FigI S, this stud and de..v

pendingpart of t e gravitating'arm maintain the end of 'thlsaid.- arm ata suflicient making its prescribed angular, movement. The said arm or lever is mounted upon the carriage'in a plane r margin rail but set forwards therefrom'to. a suitable distance as shown in Figp'l to 4, and that edge which is adjacent to t said-railis i tance above thefframe aswill permit of it which is parallel with-the parts a' partial rotation thereto which lifts. thestriker ofi the dome of the bell and simul-.

against the'dome and the bell and at ringing mechanism to their normal-positions.

- suitable stop for limiting the rotating or'roll- 1 acta'sabuifer.

the carrlage,..an annmounted on the rock margin slide e,'t s extension of the bell-conclined stop-ring, the bell-control lever; is freed under the influence of the torsion spring.

what we desire to claim andsecureby Letthe carriage and capable of in ependent ,a stop on the carriage coo crating with the provided with a stud .or rearwardly extend-- mg ear a and when the machine is being operated and the carriage in its traverse towards the left hand of the machine, is about bringing its sto -arm up to the left hand troll lever is taken under the inclined stop-plece or rib of the saidslide and is de pressed thereb ,"and made to carry the le ver '1', down wit it, as shown in Fig. 9. This lever then acts upon the rolling striker rod through the medium of the stud h and im:

taneously renders active the torsion spring h ,so that when by the continued traverse of the carriage the stud is taken clear of them or released, and the torsion spring reacts to rotate the rolling rodand drive the striker the same time to restore the 'parts of'the bell After the bell has been sounded, the torsion spring takes the-lateral extension of the gravitating bell-control lever into such a potion that, at the commencement of thereturn movementof the carriagefromleft to right, the said extension will impingeupon the inclined topside ofthe left handstop and ride' idly over the inclined top of the same without imparting any movement to thebell striker rod which may be provided with a ing movement which it'is capable ofmaking iHaving "fully described our invention,

ters Patent is 4 '1. A type-writing machine comprising a platencarriage, a rock shaft sup ortedby movementrelative. thereto, a carriage stop arm'an'd escgptement bracket mounted upon l5 tween said relatively movable parts to main- 1 said rock'sh and a spring interposed 'betain' themin .their'normal'positions and to 2. 'A type-writing machine comprising a platen carriage, a marginal rail stop or stops,

rail stop or stops, a rock 3 aft supported by shaft and'constituting a carriage stop, and a torsional. spring mounted on the rock shaftfor reserving the normal osition' of-the! carnage stopin line with tlie'marginal rail stop ,or stops,"fo 1: restoring the'sameto suchnormal' position, after it been for clearing a margin stolp and to constitute a buffer when moving t carriage to its initial positlon, combined with means for actuating of the path of the rail stop or stops.

3. A type-writing machine comprising an adjustable margin rail stop or stops, a platen carriage. sto

the rock shaft to move the carriage stop out carried thereby, cooperating with the rai stop or stops, a rock shaft supported by the carriage and provided with an arm to constitute the carriage stop,-said arm nprmally positioned in the laten ofthe'rail stop or stops, means for roc ing said shaft to move the carriage stop out of the plane of the rail stop or stops, atorsional spring mounted upon said rock shaft and adapted to normally maintain said arm in thewpath of the marginal stop orstops and for restoring said arm to its operative position after the rock shaft has been actuated to raise said arm to admit 'of the further travel of the carriage to provide for marginal writing, a lever fulcrumed ',to the carriage and adapted to be depressed by its passage under the said stop projection for rendering active the spring, a bell-ringing mechanism controlled by the lever, and a bell-striker adapted to be operated by said spring when the lever clears the said projection, said lever on the return movement ofsaid carriage adapted to be moved ove'rpast the margin stop without affecting the ringing mechanism.

4. A t pe-writing machine comprising an adjustab e margin rail stop'or stops, a platen carriage sto carried thereby, cooperating with the ra' stop or stops, a rock shaft sup-' portedb'y the carriage and provided with an arm to. constitute the carriage stop, said arm normally positioned in the laten of the rail stop or stops, means for roc ing said shaft to move the carriage step out of the plane of the rail stopl or stops, a spring, a lever fulcrumed to t e carriage and adapted to be depressed by its passage under the said stop WitnessesL f- HENRY L. KEnvELL,

IDA B. Sonar: 4 

